illegal hacking and safe hacking

well ok from past experiences that i will not mention, if some1 here thats is reading this is kinda uneasy about hacking (ive seen lots of ppl that have had that) i will tell you that if the hacking interferres with Nexon's prophit, its is ileagal but as long as it does not interferre with Nexon's prophit, then it is ok so just a bit of advice to ppl that wanted to hear it sooo yeah... (Combat arms does not have anything that you can buy with real money so this applies to other games like maplestory or ... yeah u get it